# -*- coding:utf-8 -*-
"""
Created on 31.01.2010

@author: r4smus
"""

empty = "Do not leave all fields empty"
thanks = "Thank you"

firstName = raw_input("please insert first name: ")

lastName = raw_input("please insert last name: ")
  
phoneNumber = raw_input("please insert phone number: ")

if firstName or lastName or phoneNumber:
    print thanks
else:
    print empty


